GopherProxy

	Add blind-spectrum (not yet documented) - blind - suckless command-line video e…
	git clone git://git.suckless.org/blind
	Log
	Files
	Refs
	README
	LICENSE
	---
	commit b221dcb4c68b492d810f249959a0bd3322dbcdeb
	parent 187994906ae77986072050ea2024fb531747fea5
	Author: Mattias Andrée <[email protected]>
	Date: Sat, 8 Jul 2017 00:51:57 +0200

	Add blind-spectrum (not yet documented)

	Signed-off-by: Mattias Andrée <[email protected]>

	Diffstat:
	M Makefile \| 1 +
	A src/blind-spectrum.c \| 166 +++++++++++++++++++++++++++++…

	2 files changed, 167 insertions(+), 0 deletions(-)
	---
	diff --git a/Makefile b/Makefile
	@@ -55,6 +55,7 @@ BIN =\
	blind-sinc-wave\
	blind-sine-wave\
	blind-skip-pattern\
	+ blind-spectrum\
	blind-spiral-gradient\
	blind-split\
	blind-split-cols\
	diff --git a/src/blind-spectrum.c b/src/blind-spectrum.c
	@@ -0,0 +1,166 @@
	+/* See LICENSE file for copyright and license details. */
	+#include "common.h"
	+
	+USAGE("[-y] [-z depth] spectrum-stream")
	+
	+static int luma = 0;
	+static size_t nz = 1;
	+
	+
	+#define PROCESS(TYPE, SUFFIX)\
	+ static void\
	+ process_##SUFFIX(struct stream stream, struct stream spectrum)\
	+ {\
	+ TYPE *table = emalloc2(nz, spectrum->frame_size);\
	+ size_t i, n, m = 0;\
	+ TYPE x, y, z, a, x1, y1, z1, a1, x2, y2, z2, a2, ix, iy, iz, w…
	+ size_t s, t, nx, ny, nxy;\
	+ nx = spectrum->width;\
	+ ny = spectrum->height;\
	+ nxy = nx * ny;\
	+ if (luma)\
	+ ny = nxy * nz;\
	+ do {\
	+ if (!m) {\
	+ m = stream->frame_size;\
	+ for (i = 0; i < nz; i++) {\
	+ if (!eread_frame(spectrum, ((char *)ta…
	+ if (!i)\
	+ goto done;\
	+ eprintf("%s: incomplete frame …
	+ }\
	+ }\
	+ }\
	+ n = MIN(stream->ptr, m) / stream->pixel_size;\
	+ for (i = 0; i < n; i++) {\
	+ if (luma) {\
	+ iy = ((TYPE )(stream->buf))[4 i + 1…
	+ iy = MIN(MAX(iy, (TYPE)0), (TYPE)1);\
	+ iy *= (TYPE)(ny - 1);\
	+ s = (size_t)iy;\
	+ t = s + 1;\
	+ t = t == ny ? ny - 1 : t;\
	+ wy = mod(iy, (TYPE)1);\
	+ x = table[4 * s + 0] * (1 - wy) + tabl…
	+ y = table[4 * s + 1] * (1 - wy) + tabl…
	+ z = table[4 * s + 2] * (1 - wy) + tabl…
	+ a = table[4 * s + 3] * (1 - wy) + tabl…
	+ } else {\
	+ ix = ((TYPE )(stream->buf))[4 i + 0…
	+ iy = ((TYPE )(stream->buf))[4 i + 1…
	+ iz = ((TYPE )(stream->buf))[4 i + 2…
	+ ix = MIN(MAX(ix, (TYPE)0), (TYPE)1);\
	+ iy = MIN(MAX(iy, (TYPE)0), (TYPE)1);\
	+ iz = MIN(MAX(iz, (TYPE)0), (TYPE)1);\
	+ ix *= (TYPE)(nx - 1);\
	+ iy *= (TYPE)(ny - 1);\
	+ iz *= (TYPE)(nz - 1);\
	+ wx = mod(ix, (TYPE)1);\
	+ wy = mod(iy, (TYPE)1);\
	+ wz = mod(iz, (TYPE)1);\
	+ s = (size_t)ix;\
	+ t = s + 1;\
	+ t = t == nx ? nx - 1 : t;\
	+ s += (size_t)iy * nx;\
	+ t += (size_t)iy * nx;\
	+ s += (size_t)iz * nxy;\
	+ t += (size_t)iz * nxy;\
	+ x = table[4 * s + 0] * (1 - wx) + tabl…
	+ y = table[4 * s + 1] * (1 - wx) + tabl…
	+ z = table[4 * s + 2] * (1 - wx) + tabl…
	+ a = table[4 * s + 3] * (1 - wx) + tabl…
	+ if ((size_t)iy != ny - 1) {\
	+ s += nx, t += nx;\
	+ x2 = table[4 * s + 0] * (1 - w…
	+ y2 = table[4 * s + 1] * (1 - w…
	+ z2 = table[4 * s + 2] * (1 - w…
	+ a2 = table[4 * s + 3] * (1 - w…
	+ x = x * (1 - wy) + x2 * wy;\
	+ y = y * (1 - wy) + y2 * wy;\
	+ z = z * (1 - wy) + z2 * wy;\
	+ a = a * (1 - wy) + a2 * wy;\
	+ s -= nx, t -= nx;\
	+ }\
	+ if ((size_t)iz != nz - 1) {\
	+ s += nxy, t += nxy;\
	+ x1 = table[4 * s + 0] * (1 - w…
	+ y1 = table[4 * s + 1] * (1 - w…
	+ z1 = table[4 * s + 2] * (1 - w…
	+ a1 = table[4 * s + 3] * (1 - w…
	+ if ((size_t)iy != ny - 1) {\
	+ s += nx, t += nx;\
	+ x2 = table[4 * s + 0] …
	+ y2 = table[4 * s + 1] …
	+ z2 = table[4 * s + 2] …
	+ a2 = table[4 * s + 3] …
	+ x1 = x1 * (1 - wy) + x…
	+ y1 = y1 * (1 - wy) + y…
	+ z1 = z1 * (1 - wy) + z…
	+ a1 = a1 * (1 - wy) + a…
	+ }\
	+ x = x * (1 - wz) + x1 * wz;\
	+ y = y * (1 - wz) + y1 * wz;\
	+ z = z * (1 - wz) + z1 * wz;\
	+ a = a * (1 - wz) + a1 * wz;\
	+ }\
	+ }\
	+ ((TYPE )(stream->buf))[4 i + 0] = x;\
	+ ((TYPE )(stream->buf))[4 i + 1] = y;\
	+ ((TYPE )(stream->buf))[4 i + 2] = z;\
	+ ((TYPE )(stream->buf))[4 i + 3] *= a;\
	+ }\
	+ n *= stream->pixel_size;\
	+ m -= n;\
	+ ewriteall(STDOUT_FILENO, stream->buf, n, "<stdout>");\
	+ memmove(stream->buf, stream->buf + n, stream->ptr -= n…
	+ } while (eread_stream(stream, SIZE_MAX));\
	+ if (stream->ptr)\
	+ eprintf("%s: incomplete frame\n", stream->file);\
	+ done:\
	+ free(table);\
	+ }
	+
	+PROCESS(double, lf)
	+PROCESS(float, f)
	+
	+
	+int
	+main(int argc, char *argv[])
	+{
	+ struct stream stream, spectrum;
	+ void (process)(struct stream stream, struct stream *spectrum);
	+
	+ ARGBEGIN {
	+ case 'y':
	+ luma = 1;
	+ break;
	+ case 'z':
	+ nz = etozu_flag('z', UARGF(), 1, SIZE_MAX);
	+ break;
	+ default:
	+ usage();
	+ } ARGEND;
	+
	+ if (argc != 1)
	+ usage();
	+
	+ eopen_stream(&stream, NULL);
	+ eopen_stream(&spectrum, argv[0]);
	+
	+ if (!strcmp(stream.pixfmt, "xyza"))
	+ process = process_lf;
	+ else if (!strcmp(stream.pixfmt, "xyza f"))
	+ process = process_f;
	+ else
	+ eprintf("pixel format %s is not supported, try xyza\n", stream…
	+
	+ if (strcmp(stream.pixfmt, spectrum.pixfmt))
	+ eprintf("videos use incompatible pixel formats\n");
	+
	+ echeck_dimensions(&spectrum, WIDTH \| HEIGHT, "spectrum");
	+
	+ fprint_stream_head(stdout, &stream);
	+ efflush(stdout, "<stdout>");
	+ process(&stream, &spectrum);
	+ return 0;
	+}